This 35mm analytical filtering funnel has the distinct advantage over glass in that it is not only shatter-proof but also chemically-inert to most liquids. Fits 55mm diameter standard filter papers. Body is at 60° angle with internal ribs at 58° for rapid filtration. Outside ribbing eliminates air lock. Shatterproof. Autoclavable. Material: polypropylene. Funnel top I.D.: 34mm. Stem O.D.: 6mm. Stem length: 52mm. Overall height: 78mm. Capacity: 10mL. Paper diameter: 55mm. Nalgene #: 4250-0035.